What is the meaning of Straggler?

One who departs from the direct or proper course, or from the company to which they belong.

One who falls behind the rest, for example in a race.

One who roams without any settled direction.

A migratory animal found away from its usual range.

A roving vagabond.

Something that shoots, or spreads out, beyond the rest, or too far; an exuberant growth.

Something that stands alone or by itself.

Source: wiktionary.org